Polishing black ⚫️
#2
Senior Member
Machine polish like paint. It will chew up pads though if its diamond plate, which i cant tell from the pic.
#3
It is possible the manufacturer has a recommendation.
If it was mine, I would do a test patch in an out of the way place using WD-40.
If it was mine, I would do a test patch in an out of the way place using WD-40.